单选题
In Line 15, what is the author's purpose in mentioning a rose, an apple, or an orchid?
A、
To make the passage more poetic.
B、
To cite examples of plants that are attractive.
C、
To give botanical examples that all readers will recognize.
D、
To illustrate the diversity of botanical life.
【正确答案】
C
【答案解析】
[分析] 主旨题。作者在文章中提到的“rose，apple”等，一再说明每个人都在无意间了解了关于植物的许多知识，故选项C最合适。
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